666560600611 has 4 divisors (see below), whose sum is σ = 666566349352. Its totient is φ = 666554851872.

The previous prime is 666560600591. The next prime is 666560600689. The reversal of 666560600611 is 116006065666.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 666560600611 - 2⁹ = 666560600099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666560601611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2696790 + ... + 2933563.

It is an arithmetic number, because the mean of its divisors is an integer number (166641587338).

Almost surely, 2^666560600611 is an apocalyptic number.

666560600611 is a deficient number, since it is larger than the sum of its proper divisors (5748741).

666560600611 is a wasteful number, since it uses less digits than its factorization.

666560600611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5748740.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 666560600611 in words is "six hundred sixty-six billion, five hundred sixty million, six hundred thousand, six hundred eleven".